CN201474904U - Brushless position-sensorless direct current and alternating current dual-purpose oil-less air compressor - Google Patents
Brushless position-sensorless direct current and alternating current dual-purpose oil-less air compressor Download PDFInfo
- Publication number
- CN201474904U CN201474904U CN200920189890XU CN200920189890U CN201474904U CN 201474904 U CN201474904 U CN 201474904U CN 200920189890X U CN200920189890X U CN 200920189890XU CN 200920189890 U CN200920189890 U CN 200920189890U CN 201474904 U CN201474904 U CN 201474904U
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Abstract
The utility model relates to a brushless position-sensorless direct current and alternating current dual-purpose oil-less air compressor which comprises a controller, an air cylinder and a motor. The motor adopts a permanent magnet brushless DC motor and comprises a stator and a rotor, wherein the stator comprises a stator iron core and a winding; the stator iron core is provided with a groove and formed by superposing silicon steel sheets; the winding is placed in the groove; a permanent magnet is arranged on the rotor; the stator and the rotor are enwrapped by a left casing and a right casing; output shafts at two ends of the rotor pass through the left casing and the right casing; an eccentric block and a cooling fan are arranged on the output shafts of the rotor; the eccentric block is connected with the lower end of a connecting rod of the air cylinder; a piston rubber cup is arranged at the upper end of the connecting rod and accommodated in a piston cavity consisting of a valve plate and a valve disc in the air cylinder; a cylinder cover is also arranged at the upper part of the air cylinder; and the controller is integrated with a rectifying device. The utility model has the advantages of universal direct current and alternating current at the input end and high efficiency.
Description
Technical field
The utility model relates to a kind of air compressor, specifically relates to a kind of oil-free air compressor of AC/DC universal.
Background technique
Oil-free air compressor great majority of the same type in the market are to use and exchange or DC electrical source, can not two kinds of power supplys general, along with the application of air compressor constantly enlarges, the user wishes a pneumatics function in different place work, and these places have plenty of ac power supply, have plenty of DC electrical source, if the direct current oilless air compressor wants to use ac power supply, must be the outer rectifying device of joining, operation is trouble very, and volume greatly, not attractive in appearance.The tradition direct current motor brush configuration arranged, the life-span of brush and commutator is not long, the starting transient current is bigger, carbon brush and commutator friction during operation, produce noise and electromagnetism spark, after the brush wear, rotating speed and power descend, must change wear-out part ability proper functioning, very trouble more changes jobs, though the oilless air compressor of some brushless direct current motors drivings is also arranged in recent years both at home and abroad, but all the sensor that installs rotor-position additional on the brushless direct current motor, rotor-position sensor is difficult to realize the miniaturization of motor existing meeting to increase motor volume, and sensor output signal is generally weak electric signal, disturbed easily, as temperature, temperature, the variation of extraneous factors such as vibration can reduce the reliability of working sensor, can not be used for abominable occasion, and sensor also is a unfavorable factor to the requirement and the increasing of motor lead line of position installation precision.
The model utility content
The purpose of this utility model is to provide a kind of brushless position sensorless to thank to the oil-free air compressor of device AC/DC, be characterized in: brushless direct current motor is the feeder apparatus rotor-position sensor not, integrated circuit controller band rectifying device, but AC/DC, have that volume is little, starting steadily, governor control characteristics is level and smooth, noise is low, long lifetime, no electromagnetic interference, efficient advantages of higher, to solve the deficiency of the described existing oil-free air compressor of background technique.
For achieving the above object, by the following technical solutions:
A kind of brushless position-sensor-free AC/DC oil-free air compressor, comprise controller, cylinder and motor, it is characterized in that: described motor is a permanent-magnet brushless DC electric machine, it comprises stator, rotor, stator comprises stator iron core and winding, described stator iron core is for there being the groove design, be formed by stacking by silicon steel plate, place winding in the groove, rotor is provided with permanent magnetic iron, a left side, right shell body is with stator and rotor parcel, the output shaft of two ends of rotor passes left and right sides housing, and rotor of output shaft axle is provided with eccentric mass and cooling fan, and described eccentric mass is connected with the lower end of the connecting rod of cylinder, the upper end of connecting rod is provided with piston cup, piston cup is contained in by in the cylinder, valve plate and valve block are formed in the piston cavity, also are provided with cylinder cap on cylinder top, described controller is integrated rectifying device.
The utility model adopts direct current to have the brushless no oil motor of groove to drive, in conjunction with the position Sensorless Control technology, be characterized in cancelling the friction reversing mode of traditional direct current motor, also cancelled contactless rotor-position sensor reversing mode, but adopted counterelectromotive force method detection rotor position, when permanent-magnet brushless DC electric machine turns round, each organize the winding counterelectromotive force and rotor-position closely related, because each phase winding alternate conduction, always there is a phase winding to be in not on-state at any time, its back electromotive force zero-crossing (being the intersection point of phase winding counterelectromotive force and three-phase neutral point current potential) is fix fixing with respect to the spatial position of rotor magnetic pole, do not change, so just can determine rotor magnetic pole position zero point by detecting with rotating speed of motor; Control of the present utility model in addition is integrated rectifying device makes the control input end realize that AC and DC is general; By above-mentioned improvement, the utility model has been realized the AC and DC double-purpose functional, and it is little to have a volume, starting steadily, governor control characteristics is level and smooth, noise is low, the life-span is long, no electromagnetic interference, the characteristics that efficient is high.
Description of drawings
Fig. 1, structural representation of the present utility model.
Embodiment
A kind of brushless position-sensor-free AC/DC oil-free air compressor, comprise controller, cylinder and motor, described motor is a permanent-magnet brushless DC electric machine, it comprises stator 1, rotor 2, stator comprises stator iron core and winding, described stator iron core is for there being the groove design, be formed by stacking by silicon steel plate, place winding in the groove, rotor 2 is provided with permanent magnetic iron, a left side, right shell body 11,12 with stator 1 and rotor 2 parcels, the output shaft at rotor 2 two ends passes a left side, right shell body 11,12, rotor of output shaft axle is provided with eccentric mass 3 and cooling fan 4, and described eccentric mass 3 is connected with the lower end of the connecting rod 8 of cylinder 5, the upper end of connecting rod 8 is provided with piston cup 9, piston cup 9 is contained in by in the cylinder 5, valve plate 6 and valve block 7 formed in the piston cavity, also is provided with cylinder cap 10 on cylinder 5 tops, described controller is integrated rectifying device.
The utility model working principle is that the rotor rotation drives the eccentric mass on the output shaft, piston cup on eccentric mass and then the drivening rod is middle pumping in cylinder, make the enclosed volume of forming by cylinder, valve plate and valve block produce cyclically-varying, thereby produce pressurized air continuously.
The utility model is for the deficiency of traditional dc motor and no brush rotor-position sensor motor, cancelled the friction reversing mode of traditional dc motor in its structure, also cancelled contactless rotor-position sensor reversing mode, but adopted the inspection of counter electromotive force method to survey rotor-position, when brushless, permanently excited direct current motor turns round, each phase winding counter electromotive force and rotor-position are closely related, because each phase winding alternate conduction, always there is at any time a phase winding to be in not on-state, its back emf waveform just can detect at this winding overhang, and fix for the locus of rotor magnetic pole on the stator winding back electromotive force zero-crossing lamp, so just can determine the position of rotor magnetic pole by detecting zero crossing; Controller is integrated in addition fairing is so that the input AC and DC of air compressor is general, volume is little, starting is steady, the speed governing feature is level and smooth, noise is low, the life-span is long, the characteristics that no electromagnetic interference and efficient are high.
Claims (1)
1. brushless position-sensor-free AC/DC oil-free air compressor, comprise controller, cylinder and motor, it is characterized in that: described motor is a permanent-magnet brushless DC electric machine, it comprises stator, rotor, stator comprises stator iron core and winding, described stator iron core is for there being the groove design, be formed by stacking by silicon steel plate, place winding in the groove, rotor is provided with permanent magnetic iron, a left side, right shell body is with stator and rotor parcel, the output shaft of two ends of rotor passes left and right sides housing, and rotor of output shaft axle is provided with eccentric mass and cooling fan, and described eccentric mass is connected with the connecting rod lower end of cylinder, the upper end of connecting rod is provided with piston cup, piston cup is contained in by in the cylinder, valve plate and valve block are formed in the piston cavity, also are provided with cylinder cap on cylinder top, described controller is integrated rectifying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920189890XU CN201474904U (en) | 2009-07-22 | 2009-07-22 | Brushless position-sensorless direct current and alternating current dual-purpose oil-less air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920189890XU CN201474904U (en) | 2009-07-22 | 2009-07-22 | Brushless position-sensorless direct current and alternating current dual-purpose oil-less air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474904U true CN201474904U (en) | 2010-05-19 |
Family
ID=42411150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920189890XU Expired - Fee Related CN201474904U (en) | 2009-07-22 | 2009-07-22 | Brushless position-sensorless direct current and alternating current dual-purpose oil-less air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389760A (en) * | 2014-11-28 | 2015-03-04 | 快意（江门）压缩机有限公司 | Domestic oilless air compressor |
-
2009
- 2009-07-22 CN CN200920189890XU patent/CN201474904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389760A (en) * | 2014-11-28 | 2015-03-04 | 快意（江门）压缩机有限公司 | Domestic oilless air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG SHENGYUAN COMPRESSOR MANUFACTURE CO., LTD Free format text: FORMER OWNER: ZHU LESHUN Effective date: 20120517 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120517 Address after: 317500 Zhejiang Province, Wenling City Industrial Zone Zeguo town red cliff 104 line on the south side of Zhejiang Shengyuan Air Compressor Manufacturing Co. Ltd. Patentee after: Zhejiang Shengyuan Compressor Manufacturing Co.,Ltd. Address before: The town of Zhejiang city in Wenling province 317500 money Village No. 523 Patentee before: Zhu Leshun |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20150722 |
|
| EXPY | Termination of patent right or utility model |